TMP127-Q1 SPI Temperature Sensor Texas Instruments TMP127-Q1 SPI Temperature Sensor is a high accuracy 0.8°C digital temperature sensor that supports an ambient temperature range of -55°C to 175°C. The TMP127-Q1 features a 14-bit signed temperature resolution (0.03125°C per LSB) while operating over a supply range of 1.62V to 5.5V. The device has excellent PSR, able to maintain accuracy over the entire supply range. It is ideal for various applications with a fast conversion rate, low supply current, simple SPI compatible interface, and an enhanced operating temperature range.